Light intensity on RGB led

Other Hardware LEDs and Multiplexing
1

Hi all.

I'm wondering how to control the light intensity on a RGB led without affecting the light color. Another doubt that I have is, why when I pass some RGB values to the led it doesn't display the color that I want? For example if I pass 255, 255, 255, the light turn on like blue, it is weird.

I will appreciate any feedback on this question.

Regards.

2

If you use digitalWrite() on each LED separately does each colour look right ?

Please post the whole program that you are using to "pass 255, 255, 255"

3

Basically you're asking how to dim an RGB led from (example) white at full brightness to dim while not changing the tint of the white? That's a million dollar question; it requires careful calibration for the particular RGB LED. To make things worse the LED tint varies with temperature and, in my experience, tends to go more red with age.